Kawasaki ER6-F: Fuelling or running rich?

[Fat Angry Scotsman]

I've been out putting on some miles on my 2009 ER6-F, I did roughly 400 miles over last weekend. From a full tank I only seem to be getting 100 - 120 miles so around 28 - 32 mpg. I've not even been hooning it as the weather is shite and I am a shitebag.

Online generally states it should be doing around the 50mpg range.

The only modifications that I know of is the black widow exhaust, it currently has standard sprockets.

Driving around town it really doesn't like being in 2nd gear while under 20mph and equally it really doesn't like being in 6th gear while under 40mph as it becomes a little herky-jerky on the throttle then.

Does it need a re-map to sort this out? I guess it's running really rich as even with the baffles in it pops and crackles a lot. Would using different sprockets (down one in front, up two in rear) mean I can drive in higher gears at lower speeds?
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PRESENT: 2018 BMW S1000XR SE Sport.
PAST: 2009 Kawasaki ER-6F. 2021 Zontes ZT-125U.

[Easy-X]

I wouldn't mess with sprocket teeth ratios just yet...

https://youtu.be/zCP4Ek6_z30

As to running lean, possibly. A decat exhaust will be more free flowing but probably won't have much impact if the air intake isn't modified to match. If anything, given your reported mpg, it might be running a bit rich! TBH might be worth looking for a fuel leak.
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Royal Enfield Continental GT 535, Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[Fat Angry Scotsman]

[arry]

You got this from a garage didn't you?

I'd do another tank and take a proper measurement, and then get it back to them to check over. There's no way an ER6 with a noob on it should be in the late twenties early thirties.

[Nobby the Bastard]

So. 6th on my exup at 30 was okay, exup valve. 2k revs.

On the strumpet (3 cylinder as opposed 4 cylinder and exup valve) anything lower than 40 3rd gear. The engine can do it but it's really lumpy.

Strumpet has a bigger engine.

50mpg will be on a mixed cycle. My FZ was doing close to 80 mpg on the motorway despite a 35 mpg quoted figure.
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trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050

[Nobby the Bastard]

And before you say an exuip only had 5 gears mine had a yzf gearbox in it.....
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trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Triumph Sprint ST 1050

[Keithy]

[wr6133]

Thats not right, i got that mpg thrashing the hell out of a gsxr 1000 no way should an er6 ridden sensibly do that.

You calculating that from amount of fuel put in against miles on odo (right way)? Or you just taking the miles done when fuel light comes on against the capacity of the tank (wrong way)? Also you are using Imperial gallons not American ones?

If that is the true figure there's something wrong, as you just bought it from a dealer I'd make it their problem.

[Easy-X]

I can easily get north of 50mpg on the XSR and they're not wildly dissimilar bikes.

As to revving it my other vehicle is a Skoda Shite-Triple (3-cyl diesel) and I have to rev the fuck out of it to do anything so no problems transitioning to a bike
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Royal Enfield Continental GT 535, Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[Fat Angry Scotsman]

I went out at the weekend on Sunday and done this route:

Departing Hamilton by M74 (S),
M74 (S) continuing to M8 (W) merge at J22,
M8 (W) continuing to J30 then joining A82 (W) via Erskine Bridge,
Due to road closure of A82, had to leave A82 by A812 exit,
A812 to B857 to A811 re-joining A82 (N),
Continuing A82 through Tarbet heading North towards Crianlarich,
Taking exit from A82 onto A85 (E) at Crianlarich,
Continuing on from A85 onto A84 at Lochearnhead,
Continued A84 through Callander and Doune until J10 of the M9,
Joined M9 (S) until merge with M80,
Continued M80 (S) until J4 taking M73 (S),
Continued M73 (S) until J1 taking M74 (S) until reaching Hamilton again.

My trip read as 157.3 miles and when I filled up to the top of the tank at the Jet garage on Bothwell Road again it took 12.09 litres to top off the tank: yielded 59.2 mpg.

So I guess I am an idiot and I think what I did to fuck up was I was running the tank down to the empty line but the empty line isn't empty and there's an uncertainty of measurement in the sensor or dial itself. I should have logged it properly.

On that route I tried hard to keep it at the speed limit and I only hooned it twice: once when some cunt in an Audi kept getting up my arse so I blasted to get away from him and the other time was when some guy in a Chubb van tried to cut me off from filtering infront of him at lights by moving his van into an angle closing the gap, it was at lights and he was in front so as soon as we moved off, the car in the right lane dropped back a bit and then I went into the left lane and just blasted past.
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PRESENT: 2018 BMW S1000XR SE Sport.
PAST: 2009 Kawasaki ER-6F. 2021 Zontes ZT-125U.

[arry]

Problem / mystery solved

That sounds a lot more like it.

[Robby]

High gear/low revs (to the point where the engine is labouring or chugging) is lot worse for the engine than low gear/high revs. Let it spin.

[blurredman]

Fuelly.com

It's kinda sad, but I can't help but fill it in every single time.. Looking back at the total cost of fuel filled up per vehicle is the most saddening....
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CBT: 12/06/10, Theory: 22/09/10, Module 1: 09/11/10, Module 2: 19/01/11
Past: 1991 Honda CG125BR-J, 1992 (1980) Honda XL125S, 1996 Kawasaki GPZ500S, 1979 MZ TS150.
Current: 1973 MZ ES250/2 - 18k, 1979 Suzuki TS185ER - 10k, 1981 Honda CX500B - 91k, 1987 MZ ETZ250 - 40k, 1989 MZ ETZ251 - 52k.

[Fat Angry Scotsman]

[Keithy]

Just checked mine over the last 110 miles, 62.1 mpg, so looks like you are right in the ball park

[Fat Angry Scotsman]

[Fat Angry Scotsman]

I bought new sprockets and a chain for the bike, is it worth changing the chain adjusters at the same time? I found them brand new online and it's only £35 for a pair delivered.
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PRESENT: 2018 BMW S1000XR SE Sport.
PAST: 2009 Kawasaki ER-6F. 2021 Zontes ZT-125U.

[wr6133]

Not unless the ones on it are fucked or you are adding bling.

[Fat Angry Scotsman]